Summary of Business and Significant Accounting Policies (Computation of Basic and Diluted Loss Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Accounting Policies [Abstract]
(Loss) income	$ (2,232)	$ 2,382
Weighted-average shares — basic	15,759	15,590
Dilutive effect of common stock equivalents from equity incentive plans	0	104
Weighted-average shares — diluted	15,759	15,694
Basic	$ (0.14)	$ 0.15
Diluted	$ (0.14)	$ 0.15
Shares of common stock equivalents excluded from computation of diluted net income per share (in shares)	52